Open the JPG image file you want to convert into an icon. With the plugin, you merely need to save the file with the file extension of .ico to create the icon.

How to Make ICO Files in Photoshop on a Mac. Images that are used as icons in the Windows operating system must be saved in ICO format. By default, Adobe's Photoshop image-editing program does not ...

Web sites such as the Favicon.ico Generator, FavIcon from Pics, Favicon Generator, Favikon, and others, will create a favicon from images that you upload from your computer.